84.2k views
4 votes
0.5x + 4 + 0.9x = x + 5

User Yaad
by
4.3k points

2 Answers

6 votes

Answer:

x=2.5

Explanation:

User Steve Melia
by
4.9k points
4 votes

Answer:


0.5x + 4 + 0.9x = x + 5

collect like terms together:


0.5x + 0.9x - x = 5 - 4 \\ x(0.5 + 0.9 - 1) = 1 \\ 0.4x = 1 \\ x = (1)/(0.4) \\ \\ { \boxed{ \boxed{x = 2.5}}}

User Andrey Nikishaev
by
4.2k points